Little changes

I've spent the afternoon on :
- Adding he FAQ page in help section
- Update the site translations (3 hours spent on this!).
- Added a footer with my twitter. If you want to know why I'm busy and can't always ork on cucumis, follow me

Hi, jp, in China, many applications are forbidden now, including twitter.
I guess you are busy to be father, and do you have a daughter, since the name is Sarda, who I think is a girl?